From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Reduction in recommended tyre pressure for the instruction book to mitigate wobbles and road shocks.
| Identifier | ExFiles\Box 29\1\ Scan057 | |
| Date | 16th September 1925 | |
| To [REDACTED] Copy to... Hs.{Lord Ernest Hives - Chair} "NEW PHANTOMCodename for PHANTOM I" AND "INDIA" STEERING. SLOW SPEED WOBBLES AND ROAD SHOCKS. Handwritten: X457 As R1/M10.9.25 recommends that tyres should be pumped to 55 lbs. pressure, C.J. considers we had better recommend 50 lbs. in our Instruction Book, as we do not want to encourage customers to keep their tyres at a higher pressure than is absolutely necessary because hard front tyres increase discomfort and vibration. Kindly arrange accordingly. Please let us know what you are arranging in regard to illustrations (mentioned in BD{Mr Berend}4/DN8.9.25) concerning instructions re balancing wheels, and what wording is being inserted in the Instruction Book re front tyre pressures and tightening shock-absorbers, if there are any insertions which are not included on the loose page of the Instruction Book of which you sent me a proof with BY16/H4.9.25. B.J. | ||